The dinner check was $58.00. If Fay gave the waiter a 20% tip, how much did she spend in all?

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Answer 1 · 2018-07-02T08:34:32

$69.60

20% is $20/100$

"of means multiply" so 20% of $58.00 means

$20/100*$58.00 = $11.60$ (this is the tip)

So altogether she spent $58.00 + $11.60 = $69.60

Answer 2 · 2018-07-02T08:36:55

$$69.60$

$20% xx $58.00 = $11.6$

$$58.00 + $11.6 = $69.60$

It is easier to multiply $100%+20%$ i.e. $1.2$ by the cost of her meal :
$1.2 xx $58.00 = $69.60$